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Senior Full Stack Java Developer Jobs in O Fallon, MO

CYNET SYSTEMS

Java Full Stack Developer

Saint Louis, MO · On-site

$50/hr

Java/JEE, Spring, Spring boot, REST/SOAP web services, Hibernate, SQL, Tomcat, Application servers (WebSphere), SONAR, Agile, AJAX, Jenkins. * Skills in UML, application designing/architecture ...

Wipro Limited

Senior Java Developer

O Fallon, MO · On-site

$60K - $135K/yr

Senior Java Developer City: O Fallon State/Province: Missouri Posting Start Date: 8/14/26 Wipro ... Based on the position, the role is also eligible for Wipro's standard benefits including a full ...

New

Delan Associates, Inc

Lead Software Engineer

O Fallon, MO · On-site

$120 - $170/hr

A senior-level engineer who combines strong full-stack Java development skills with hands‑on experience building Agentic AI frameworks (MCP + LLMs), while also possessing the analytical and design ...

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Senior Full Stack Java Developer information

See O Fallon, MO salary details

$10

$54

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How much do senior full stack java developer jobs pay per hour?

As of Aug 19, 2026, the average hourly pay for senior full stack java developer in O'Fallon, MO is $54.31, according to ZipRecruiter salary data. Most workers in this role earn between $47.21 and $60.91 per hour, depending on experience, location, and employer.

What is a senior full stack Java developer?

Senior Full Stack Java Developers are experienced software professionals who design, develop, and maintain both the front-end and back-end components of web applications using Java and related technologies. They typically work with frameworks such as Spring Boot for the backend and may use JavaScript frameworks like Angular or React for the frontend. In addition to coding, they often lead development teams, make architectural decisions, and ensure best practices are followed throughout the software development lifecycle.

What are the key skills and qualifications needed to thrive as a senior full stack Java developer?

A Senior Full Stack Java Developer needs advanced proficiency in Java, front-end frameworks (such as Angular or React), and a solid understanding of databases, supported by a bachelor’s degree in computer science or related field. Experience with tools like Spring Boot, RESTful APIs, version control systems (e.g., Git), and cloud platforms is typically required, along with relevant certifications. Strong problem-solving, communication, and teamwork skills help developers effectively collaborate and deliver robust solutions. These competencies are crucial for building scalable applications, leading projects, and ensuring efficient development processes.

What are some common challenges senior full stack Java developers face when balancing backend and frontend responsibilities?

Senior Full Stack Java Developers often encounter the challenge of staying up-to-date with both backend Java frameworks and rapidly evolving frontend technologies. Balancing deep expertise in server-side development with proficiency in modern JavaScript frameworks (like React or Angular) can be demanding. Additionally, these professionals often need to effectively prioritize tasks between client and server development while collaborating with specialized frontend or backend team members. Time management, clear communication, and a willingness to learn new tools are essential for success in this multifaceted role.

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Senior Full Stack Java Developer jobs near you
Infographic showing various Senior Full Stack Java Developer job openings in O'Fallon, MO as of August 2026, with employment types broken down into 85% Full Time, 9% Part Time, 5% Contract, and 1% Nights. Highlights an 86% Physical, 4% Hybrid, and 10% Remote job distribution, with an average salary of $113,010 per year, or $54.3 per hour.

Java Full Stack Developer

CYNET SYSTEMS

Saint Louis, MO • On-site

$50/hr

Contractor

Re-posted 19 days ago

Job description

Job Overview:

Requirement/Must Have:

  • 5+ years of experience in Java.
  • Skills in developing applications using multi-tier architecture.
  • Knowledge of GCP/Any cloud.
  • Java/JEE, Spring, Spring boot, REST/SOAP web services, Hibernate, SQL, Tomcat, Application servers (WebSphere), SONAR, Agile, AJAX, Jenkins.
  • Skills in UML, application designing/architecture, Design Patterns.
  • Angular (2.x or latest version).

Responsibilities:

  • Maintain active relationships with Product Owner to understand business requirements, lead requirement gathering meetings and review designs with the product owner.
  • Own backlog items and coordinate with other team members to develop the features planned for each sprint.
  • Perform technical design reviews and code reviews.
  • Mentor, Lead and Guide the team on technical skills.
  • Be Responsible for prototyping, developing, and troubleshooting software in the user interface or service layers.
  • Perform peer reviews on source code to ensure reuse, scalability and the use of best practices.
  • Participate in collaborative technical discussions that focus on software user experience, design, architecture, and development.
  • Perform demonstrations for client stakeholders on project features and sub features, which utilizes the latest Front end and Backend development technologies.

Skills:

  • Java.
  • Spring.
  • Cloud.

Founded in 2010 and headquartered in the Washington, DC metro area, Cynet Systems Inc. is a leading staffing and recruiting powerhouse. Proudly recognized as a nationally and locally certified diversity firm, Cynet delivers agile, scalable talent solutions across industries. With an active footprint in all 50 U.S. states and Canada, we support thousands of consultants through our expansive, high-performing recruitment engine operating across North America and Asia—ensuring speed, quality, and consistency in every hire.
Cynet Systems logo

About Cynet Systems

Sourced by ZipRecruiter

Cynet Systems Inc is a staffing and recruiting corporation nestled in Ashburn, VA, USA. Established in 2010, the company operates within the Information Technology and Services sector, specializing in providing effective workforce solutions to different business needs, including IT consulting, direct hire, and contract staffing services. Through the years, Cynet Systems has built an impressive portfolio, going beyond borders and expanding its operations internationally in Canada and India. Rooted in its core values of teamwork, leadership, and commitment, Cynet Systems helps businesses unlock their full potential by providing versatile and competent professionals that perfectly align with their needs. Fueled by their unwavering mission to deliver top-tier talent to businesses worldwide, Cynet Systems garnered various recognitions including SIA's fastest-growing staffing firms and Best Place to Work in Virginia for 2019.

Industry

It services

Company size

501 - 1,000 Employees

Headquarters location

Sterling, VA, US

Year founded

2010

Social media

Twitter

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